Operating-lever for pumping machinery



N5 Model.) r

J. WHEELOUK. OPERATING LEVER FOR PUMPING MACHINERY. N0. 349,551,

Patented Sept. 21

FlEl..l.

k WITNESSEE N PETERS, Mlllbagripher. Wnhinglm. D. C.

UNITED STATES PATENT OFFICE.

JEROME \VHEELOGK, OF \VQRGEST ER lWIASSAOHU SETTS.

OPERATING-LEVER FORPUMPING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 349,551, datedSeptember 21, 1886.

A pplicationfiled June 2, 1886.

To all whom it may concern.-

Be it known that I, JEROME WHEELooK, of Vorcester, inthe county of\Vorcester and Commonwealth of Massachusetts, have invented new anduseful Improvements in Operating-Levers for Pumping Machinery, of whichthe following, in connection with the accompanying drawings, is aspecification, like letters representing like parts.

Hy present invention relates to operatinglevers for reciprocating pumps,the pistons of which are propelled through connecting-rods attached to areciprocating part of machinery of any description. by any ordinarymechanism, and has for its object to give an easy and yielding stroke tothe piston which forces the liquid through the discharge-pipe.

Furthermore, my invention consists of the improved construction of saidlever combining two separate levers into one and applying springs foraneasy adjustment.

As is well known to those skilled inthe art, there is always in thecylinders of directacting pumps a certain amount of pressure which iscreated by the resistance of the fluid crowding through small openingsin a large quantity. This is particularly the case with those pumpswhose pistons are traveling rapidly, necessitating the displacement of alarge amount of water or any other liquid in a very shorttimc, so thatwhen the piston is solidly connected to any reciprocating mechanismwhich has a positive movement there is always danger ofbreaking a partof the pump or its connection with the driving power should theresistance be so great as to prevent the piston from performing itsduty.

In view of this fact my invention is especially adapted for pumps of theabove-men-t tioned variety, as illustrated in the accompanying drawings,in which Figure 1 represents a pump connected by means of my improvedlever and a link with the cross-head of a steam-engine. Fig. 2 is afront view of myimproved lever, illustrating its action in case of toomuch compression inthe cylinder of the pump; and Figs. 3 and 4 inseveral views show my improved 'lever in detail, the main acting partsbeing separated.

Referring to the drawings, A is a pumpcylinder having a piston andpiston-rod, a,

Serial No. 203,956. (Nomodet) the pump would move in the same direction,

the travel of the latter, however, being shorter than that of the formeron account of the difference in the distances of the points f and d fromthe fulcrum e.

' As my present invention the lever 0 consisls of the two parts 0 and Gwhich are cast or made separately to be afterward united by a pin orbolt at g, which serves as a pivot for the small arm 0', which isadjustably held in proper position by means of springs h itrestingagainst the wings 2' t at the lower end of the lever G and firmlyattached to the swinging end of the arm 0. g

In order to secure a guide for the arm 0 at its lower orloose end, Iprovide the wings i of the lever O with holes '17, as shown in Fig. 3,through which and the springs h h a bolt,j, is drawn and secured by nuts7c. (Shown in Figs. 1 and 2.)

To enable the arm 0 to properly swing or adjust itself to the extentallowed by the springs, the hole in the loose end of the lever throughwhich the bolt j passes is elongated, as especially illustrated in Fig.4. As previously stated, the coupling-rod B, connecting the lever O withthe pump-piston, is attached to the former at the point d, and theeffect and working of my improved lever will be seenin Fig. 2,where theupper end is represented as being moved by power in the direction of thearrow. The resistance which the piston in the pump meets with istransferred to thearm O, which yields after acertainamountof pressurehas been attained, and then takes its normal position again, the springsh h operating to that purpose. By these means the surplus strain ispractically taken off the operating parts,all0wing the machinery to runsmoothly without being liable to break either cylinder- IO ing optional;but

\Vhat I claim'as new and my invention, and desire to secure by LettersPatent, is-

In an operating lever for pumping machinery, the combination,with alever pivoted at one end and provided with lugs or wings and springsresting against the same, of an arm connected with the pump and pivotedto said lever, all operating as and for the purpose specified. I

JEROME XVHEELOGK.

\Vitnesscs:

CHAS. F. SOHMELZ, ARTHUR E. HILL.

